noun (foc, i , - , pl2=focuses)
- (countable) (optics) a point at which reflected or refracted rays of light converge.
verb (focuses or, less commonly, focusses, focusing or, less commonly, focussing, focused or, less commonly, focussed)
- The heat of sunlight at the of a magnifying glass can easily set dry leaves on fire.
- (countable) (geometry) a point of a conic at which rays reflected from a curve or surface converge.
- (uncountable) (photography, cinematography) The fact of the convergence of light on the photographic medium.
- Unfortunately, the license plate is out of in this image.
- (uncountable) (photography, cinematography) The quality of the convergence of light on the photographic medium.
- During this scene, the boy"s face shifts subtly from soft into sharp .
- (uncountable) concentration of attention.
- I believe I can bring the high degree of required for this important job.
- (countable) the exact point of where an earthquake occurs, in three dimensions.
- The earthquake's was at exactly 37 degrees north, 18 degrees south, seventy five meters below the ground.
- (transitive) To cause (rays of light, etc) to converge at a single point.
- (transitive) To adjust (a lens, an optical instrument) in order to position an image with respect to the focal plane.
Etymology: focusLatin, focus (hearth, fireplace), of unknown origin.
- You'll need to the microscope carefully in order to capture the full detail of this surface.
- (transitive) (followed by on or upon) To concentrate one's attention.
- Focus on passing the test.
- (transitive) To make (a liquid) less diluted.
- (intransitive) To concentrate one"s attention.
- If you're going to beat your competitors, you need to .
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